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Vulnerability record · CVE-2017-12740 · published 26 December 2017

CVE-2017-12740: Siemens logo\! soft comfort download of code without integrity check vulnerability

Siemens · Logo\! Soft Comfort

Siemens LOGO! Soft Comfort (All versions before V8.2) lacks integrity verification of software packages downloaded via an unprotected communication channel. This could allow a remote attacker to manipulate the software package while performing a Man-in-the-Middle (MitM) attack.

5.9 CVSS 3.0 Medium EPSS 0.57% · top 54.2% CWE-494 · Download of code without integrity checkCWE-345 · Insufficient verification of data authenticity
5.9CVSS 3.0 base score, v2 4.3
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Siemens LOGO! Soft Comfort (All versions before V8.2) lacks integrity verification of software packages downloaded via an unprotected communication channel. This could allow a remote attacker to manipulate the software package while performing a Man-in-the-Middle (MitM) attack.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-888929.pdf Vendor Advisory
https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-888929.pdf Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2021-44228Apache Log4j2 JNDI lookup remote code executionApache Log4j2 versions 2.0-beta9 through 2.15.0 (excluding 2.12.2, 2.12.3, and 2.3.1) do not protect against attacker-controlled LDAP and other JNDI …KEVEPSS 100%analysed9.0CVE-2021-45046Apache Log4j 2.15.0 Incomplete Fix Allows JNDI Lookup InjectionThe fix for CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. When a non-default Pattern Layout uses a Cont…KEVEPSS 100%analysed8.4CVE-2020-25244Siemens logo\! soft comfort uncontrolled search path element vulnerabilityA vulnerability has been identified in LOGO! Soft Comfort (All versions < V8.4). The software insecurely loads libraries which makes it vulnerable to…EPSS 0.25%7.8CVE-2019-10924Siemens logo\! soft comfort deserialization of untrusted data vulnerabilityA vulnerability has been identified in LOGO! Soft Comfort (All versions < V8.3). The vulnerability could allow an attacker to execute arbitrary code …EPSS 1.3%5.5CVE-2020-25231Siemens logo\! 8 bm firmware hard-coded credentials vulnerabilityA vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3), LOGO! Soft Comfort (All versions < V8.3). The encryp…EPSS 0.18%5.1CVE-2020-25243Siemens logo\! soft comfort path traversal vulnerabilityA vulnerability has been identified in LOGO! Soft Comfort (All versions < V8.4). A zip slip vulnerability could be triggered while importing a compro…EPSS 0.31%7.8CVE-2026-3502TrueConf Client update download lacks integrity check, enabling code executionTrueConf Client downloads application update code and applies it without verifying its integrity (CWE-494). An attacker who can influence the update …KEVEPSS 0.33%analysed7.7CVE-2025-15556Notepad++ WinGUp updater lacks update integrity verificationNotepad++ versions prior to 8.8.9 use the WinGUp updater, which downloads update metadata and installers without cryptographic verification. An attac…KEVEPSS 1.8%analysed

Source: NIST National Vulnerability Database (record CVE-2017-12740), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.